Bot reference catalog

One-page summaries of 30 common search, AI/LLM, and social-preview crawlers.

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Yahoo Slurp

Vendor
Yahoo / Verizon Media
Type
Search
JavaScript rendering
partial
Honors robots.txt
yes
VendorYahoo (Verizon Media)
TypeSearch crawler (legacy; Yahoo Search results increasingly come from Bing)
robots.txt tokenSlurp
JavaScript renderingPartial
Honors robots.txtYes

User-Agent string

Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ysearch/slurp)

Purpose

The classic crawler for Yahoo! Search. In practice Yahoo's search results have been mostly Bing-derived since 2009 (US) and 2018 (Japan). The Slurp crawler still runs but its weight in actual rankings is small outside of Yahoo's regional properties.

The Japanese property yahoo.co.jp operates its own search and crawler infrastructure separately.

In our audit

In v1 we observed yahoo.com blocks GPTBot, ChatGPT-User, ClaudeBot, PerplexityBot. yahoo.co.jp goes further: it IP-walls real Chrome from our datacenter while allowing Googlebot, Bingbot, and Applebot UAs from the same IP — a classic UA-only allowlist pattern.

How to allow / block

User-agent: Slurp
Disallow: /

Sources